AS28257 — CONCEITOS NET SERVICOS DE COMUNICACAO E MULTIMIDIA
AS28257 announces 3 IPv4 prefixes covering 7,168 addresses and 1 IPv6 prefixes.
About this network
AS28257 is operated by Conceitos Internet, a regional ISP in Brazil.
What it's used for
- The address space carries residential and business access traffic, evidenced by reverse DNS entries like din-84-225-186-0.conceitosinformatica.com.br and din-177-129-46-254.conceitosinformatica.com.br.
- The AS announces 7168 IPv4 addresses across 5 prefixes and 1 IPv6 prefix, with 5 observed neighbours, indicating a role as an access provider rather than a transit hub.
Notable
- All registrants for the announced prefixes are listed as CONCEITOS NET SERVICOS DE COMUNICACAO E MULTIMIDIA, matching the AS holder.
- The address inventory consists of five IPv4 blocks, including a /20 and four smaller /22 and /23 blocks, all registered to the same entity.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 138.36.140.0/22
- 177.129.40.0/21
- 186.225.80.0/20
- 2804:db4::/32
Upstream networks
Downstream networks
- AS268975 GLOBAL TELECOM SERVICOS DE COMUNICACAO E MULTIMIDI
- AS266363 G & M SERVICOS DE COMUNICACAO E MULTIMIDIA LTDA-ME
Adjacent networks
BGP / ASN / CIDR
awaiting query
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IPv4
resolving...
IPv6
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Search Results
IPv4 Prefixes
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IPv6 Prefixes
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Total Prefixes
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Unique /24s
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⚠ SUSPICIOUS PREFIX ANNOUNCEMENTS DETECTED